Dwyer Series L4 Flotect® Float Level Switch, Side Wall Mount w/ 316 SS Float

Rugged and reliable the Series L4 Flotect® Float Switch operates automatically to indicate tank level. Perfect for starting or stopping pumps, opening or closing valves, or actuating level alarm signals. A unique magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, the free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm. Float arm hinge design limits the arm angle to prevent vertical hang up. Applications: Direct pump control for maintaining level, Automatic tank dump operations, Control levels or provide alarms in sumps, scrubber systems, hydro-pneumatic tanks, low pressure boilers, and various water/wastewater treatment processes.

Features

• Leak proof body machined from bar stock
• Choice of floats dependent on maximum pressure and specific gravity
• Weatherproof, designed to meet NEMA 4
• Explosion-proof
• Installs directly and easily into tank with a threaded branch connection or flange
• Electrical assembly can be easily replaced without removing the unit from the installation so that the process does not have to be shut down
• Horizontal installation or optional top mount vertical installation
• Unique magnetically actuated switching design gives superior performance
• No bellows, springs, or seals to fail
• Free-swinging float attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
• Float arm hinge design limits the arm angle to prevent vertical hang up.

Specifications

• Service: Liquids compatible with wetted materials.
• Wetted Materials: Float and Rod: 316 SS; Body: Brass or 316 SS standard
• Magnet Keeper: 430 SS standard, 316 SS or nickel optional.
• Temperature Limits: 4 to 275°F (-20 to 135°C) standard
• MT high temperature option 400°F (205°C) [MT option not UL, CSA, ATEX or IECEx].
• ATEX and IECEx options: Ambient temperature -4 to 163°F (-20 to 73°C);
• Process temperature -4 to 163°F (-20 to 73°C).
• Pressure Limit: Brass body 1000 psig (69 bar), 316 SS body 2000 psig (138 bar).
• Standard float rated 100 psig (6.9 bar).
• Enclosure Rating: Weatherproof and Explosion-proof.
• **Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX CE 0344 EX II 2 G Ex d IIB T6 Gb -20°C?Tamb°C. -20°C?Process Temp°C. EC-Type Certificate No.: KEMA 03 ATEX 2383.
• ATEX Standards: EN60079-0: 2009; EN60079-1: 2007.
• IECEx Certified: For Ex d IIB T6 Gb -20°C?Tamb°C. -20°C?Process Temp°C. IECEx Certificate of Conformity: IECEx DEK 11.0071. IECEx Standards: IEC 60079-0: 2007; IEC 60079-1: 2007.
• Switch Typist snap switch standard
• Electrical Rating, FM, ATEX and IECEx models: 10 A @ 125/250 VAC (V~).
• CSA models: 5 A @ 125/250 VAC (V~); 5 A res., 3 A ind. @ 30 VDC.
• MV option: 1 A @ 125 VAC (V~); 1 A res., .5 A ind. @ 30 VDC.
• MT option: 5 A @ 125/250 VAC (V~). [MT and MV option not UL, CSA, FM, ATEX or IECEx]
• Electrical Connection and CSA models: 16 AWG, 6" (152 mm) long.
• ATEX and IECEx units: terminal block.
• Conduit Connection:3/4" (19.05 mm) female NPT standard or M25 with -BSPT option.
• Process Connection: 1-1/2" (38.10 mm) male NPT or 1-1/2" (38.10 mm) male BSPT standard, 2-1/2" (63.50 mm) male NPT or 2-1/2" (63.50 mm) male BSPT standard optional floats.
• Mounting Orientation: Horizontal installation standard, optional vertical top mount.
• Deadband: 3/4" (19 mm) for standard float.
• Specific Gravity: 0.7 minimum with standard float.
• For other floats see Options/Accessories page.
• Weight:4 lb 9 oz (2.07 kg).
• Agency Approvals', CE, CSA, FM, IECEx, UL**.**No Housing Option (-NH) has no approvals.

Downloads

Product Manual (PDF Download)